Leather-rolling machine.



Patented July 8, 1913.

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G. A. DOBYNE.

LEATHER ROLLING MACHINE.

APPLICATION FILED 11017.21, 1910.

G. A. DOBYNE.

LEATHER ROLLING MACHINE.

APPLIUATION FILED Nov. 21, 1910.

G. A. DOBYNE.

LEATHER ROLLING MACHINE.

APPLIOATxoN FILED Nov. 21, 1910.

FNWI 1 Patented July 8, 1913.

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LETHEIVROLLING MACHINE.

Spwication of Lette-rs .Patent- Patented .July 8, 1 913.

Amlmton lad Formulier .21, 19,10. Serial No. 59353.56

To a whom-it may concern Be it known that I, Gnome A; Domme, a

citizen .of the United States, residing at the cityof St. LouisState of Missouri, have Iing vented certain new and useful Im rovements r in Leather-Rolling Machines, o which the following lis a specification.

This invention relates to machines for rolling leather, and its objects are .to provide a machine which will be simple in oonstrnc tion and operation.

Further lobieots will appear from the vder tai-l description taken in connection with the i accompanying drawings in which:

Figure 1 is a front elevation of a machine f embodying this invention, Fig. 2 is a right hand elevation, Fig. 3 is a 'left hand .elevation, and 4 is a section on the line 4% Fig. 2.

Referring to the accompanyin drawings, 1 designates one of a plurality o standards, and 2 the rails which form the frame of the machine. A pair of castings 22 and 25 are mounted upon and .clamped to the rails 2 and form the side frames of the machine.

A shaft 24 is mounted in bearings in the side frames. Tie-rods 27 connect casting 22 with castin 25 and extend through pipes 28, or the li e, that space said castings 22 and 25 apart. A belt 29 drives pulley 31 on shaft 24.

Shaft 24 bears a roller 34 that is located between castings 22 and 25, part of said roller being cylindrical and another part being concave. A shaft is journaled in openings in a pair of blocks 36 and is located a ove shaft 24. Said blocks 36 are slidably mounted in slots 37 in castings 22 and 25, respectively, said slots being preferably arranged vertically in said castings. Shaft 35 bears a roller 38 that is located between castings 22 and 25 and above roller 34, part of said roller 38 being cylindrical and another part bein convex in order to rest normally upon tie cylindrical and concave parts, respectively, of roller 34. Castings 22 and 25 are provided with screw-threaded o enings 39 to receive thumb screws 40.

ach thumb-screw 40 bears a collar 41, which is loosely mounted on a reduced end 42 of said screw, said collar bearing a flange 43 that holds one end of a spring 44 in place. Said springis arranged to exert its pressure above roller 38, a han `-upon a block 36 and therebytends to hold roller 38 in engagement with roller 34, a pro.- jlection 45, -or the like, on arranged to hold the other end of Said spring in place. By means of the thumb:- screws 40, the pressure of springs 44 can .be

regulated so as to increaseor diminish the pressure of roller 38 .upon roller 34. A rod .or shaft 46 is journaled in bearings formed in bosses 59 on castin s 22 and 25 preferably die 47 being attached Ato said rod in orderto aord a means for rotating same. Each end of rod 46 .is

a slot 4'9 in .the enlarged head .of a link or plate 50, said slot being preferably arranged to 4extend substantially horizontal. Said plate 56 is dependent from in A48, and consaid block being provided A with an eccentric pin 48, whichprogects .into

tains a slot 51 through which shaft 35 exp tends, said slot 51 being disposed substantially vertical. The 'bosses 59 are recessed vertically as shown at -58 in Figs. 1, 2 and 4 to form side walls 60. The links or plates 50 are guided and sustained 4at their lower vends by and between the ends of the rolls 38 and the inside faces of the castings 22 and 25, and at their upper ends by the bosses 59 and the side walls 60 thereof. Pins 48 normally underlie the'horizontal axis of rod 46 and thereby allow roller 38 to rest upon roller 34, but, when rod 46 is rotated in either direction through approximately one half of a revolution, said pins .force plates 50 upwardly and thereby raise roller 38 outl of engagement with roller 34 in order to allow a piece of leather to be placed between said rollers. Shaft 24 bears a gear 52, which drives gear 53 borne by shaft 35, the teeth of both gears being relatively long in order to allow rollers 34 and 38 to be separated, as hereinabove described, without entirely separating said gears.

Rollers 34 and 38 rotate with shafts 24 and 35 and, when a piece of leather is placed between said rollers, as hereinabove described, same feed the leather from the front to the back of the machine, z'. e., from right to left, Fig. 3. The leather is rolled either between the cylindrical parts of rollers 34 and 38 or between the concave and convex parts of said rollers and, as springs 44 press roller 38 toward roller 34, the leather is' made more flexible by the rolling, the concave and convex parts of said rollers affording means for pressing the leather either into a concave or a convex form.

I claim:

1. In a leather rolling machine, the combination with a pair of side members, of a pair of rolls mounted in said side members, one of said rolls being slidable in said sida` members toward and fromfthe other roll, a rock shaft mounted in said side members and having eccentrics on the ends thereof, and links connectingV said eccentrics with said slidable roll, constructed to cause said rock shaft to separate said rolls.

2. In a leather rolling machine, the combination with a pair of side members, of a pair of rolls mounted in said s ide members, one of said rolls being slidable in said side members toward and from the other roll, a rock shaft mounted in said side members and having eccentrics on the ends thereof, and means guided on said side members connecting said eccentrics and said slidable roll, constructed to cause said rock shaft to separate said rolls.

3. In a leather rolling machine, the combination with a pair of side members, of a pair of rolls mounted in said side members, one of said rolls being slidable in said side members toward and from the other roll, a rock shaft mounted in said side members and having eccentrics on the ends thereof, and plates slidably mounted on said side members and connected at one of their ends to said slidable roll and ,having in their other ends transverse slots to-engage said eccentrics, constructed to cause said rock shaft to separate said rolls.

4. In a leather rolling machine, the oombination with a pair of side members, of a pair of rolls mounted in said side members, one of said rolls being slidable in said side members toward and from the other roll, said side members having bosses projecting therefrom, a rock shaft mounted in said 'bosses and having eccentrics on the ends thereof, and links connecting said eccentrics.

with said slidable roll, constructed to cause said rock shaft to separate said rolls.

5. In a leather rolling machine, the combination with a pair of side members, of a pair of rolls mounted in said side members, one of said rolls being slidable in said side members toward and from the other roll, said side members having bosses projecting therefrom, a rock shaft mounted in lsaid bosses and having eccentrics on the ends thereof, and plates guided on said side members and by said bosses and connecting said eccentric and said slidable roll, constructed to cause said rock shaft to separate said rolls. In testimony whereof I have hereunto aixed my signature in the presence of two witnesses. I

GEORGE A, DOBYNE. Witnesses:

GLADYS WAL'roN, GEORGE G. ANDERSON. 

